Context:
Currently, the viewLevel executedFlowNode filter does not remove FlowNodes from the result of distributedBy report, though the bucket do seem to be empty for the filtered out nodes. 

Hint:

This might be the result of the `addMissingDistributions` enrichment we apply to the distributedBy report result. We do have an extra check for filters in the equivalent `addMissingGroupByKeys` groupBy part.

AT:

• ExecutedFlowNode viewLevel filter works for distributedBy reports in the same way it works for groupBy reports